<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>hello_react</title>
  </head>
  <body>
    <!-- 准备好一个容器 -->
    <div id="test"></div>

    <!-- 引入react核心库 -->
    <script src="../js/react.development.js"></script>

    <!-- 引入react-dom用于支持react操作DOM  -->
    <script src="../js/react-dom.development.js"></script>

    <!-- 引用bable,用于将jsx转为js -->
    <script src="../js/babel.min.js"></script>

    <script type="text/babel">
      // 此处一定要写bable

      const myData = 'Hello,React'
      const myNum = 123
      const arr = ['angular', 'react', 'vue']

      // 1. 创建虚拟dom
      const VDOM = (
        <div>
          <h1>{myData}</h1>
          <input type="text" />
          <span>{myNum}</span>
          <ul>
            {arr.map((item, index) => {
              return <li key={index}>{item}</li>
            })}
          </ul>
        </div>
      )
      // 2. 渲染虚拟dom到页面
      ReactDOM.render(VDOM, document.getElementById('test'))
    </script>
  </body>
</html>
